Improvement in brewing beer and othee malt liquors



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Letters Patent No. 76,177, dated March 31, 1868.

IMPROVEMENT IN snnwmc BEERAND crass MALTHLIQUORS.

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TO ALL WHOM IT MAY conceals:

Be it known that I, WILLIAM H. ELLIoT of the city, county, and State of New York, have invented a new .and improved Process of Brewing Beer and other Malt Liquors; and I do hereby declare-that the following is a full'and exact description thereof, reference being bad to the accompanying drawings, and to the letters of reference marked thereon.

Similar letters of reference indicate the same devices in all the figures.

. To enable others skilled in the arts to comprehend, make, and use my invention, I will proceed to describe its nature, construction, and operation, p

The nature of my invention consists in condensing the vapors of the boiling wort and returning them to the boiling-tank as fast as condensed, and afterwards cooling the contents of the boiling-tank, which are composed of the wort, with the condensed vapors returned to it, by passing it through an enclosed surface-cooler as-it is conducted from the boiling-tank to a suitable reservoir; and in the employment of an enclosed surface-cooler, in combination-with a boiling-tank, which is provided with a condenser for condensing the vapors of the wort, and a pipe for returning them to the boiling-tank as fast as condensed.

Figure 1 is an elevation of a portion of a distillery.

Figure 2 is a vertical section of a surface-cooler.

Figure 3 is a. cross-section of a condenser.

Figure 4 is a horizontal section of the same. i

a, framework of the distillery, b, tank, and b steam-heating pipe for boiling the wort; a, condenser; t", conducting-pipe for vapor from the tank to the condenser; 0, thin passages in the condenser, whichare surrounded by water, and serve as condensing-surfaces. These open-into conducting-pipe c at one end, and into pipe 02 at the other end. e, water-pipe which brings cold water to the condenser; e water-pipe which carries ofi' water after it has passed through the condenser; e", opening for the'escape of atmospheric air and noncondensable gases from the boiling-tank; f, pipe for conducting the contents of tank 6 to tank y. Tank 9 is provided with a strainer, at a suitable height above the bottom, which separates the dregs of thewoi't from the liquid. in, pump for raising the wort from the lower part oftank g to cooler k, through pipes 2'- and i. The passages c descend a little towards piped, which conducts the condensed vapors back to the lower part of tank 6. Cooler 7c is similar to a French cooler, except that it is enclosed in an air-tight case, so that the aroma of the wort cannot escape from it. It, pipe which brings coldwater to the cooler. This pipeis folded upon itself within the cooler in a vertical serpentine form. 70", that portion of the pipe which conducts the water away from the cooler.

As the wort enters the cooler through pipez" it falls into trough Z, and drips through openings in the bottom of'the trouglrupon the pipe is, and from one foldoi' the pipe to another, till it is collected into pipe m at the bottom of the cooler, which conducts it 'to the tank or'reservoir n. This tank is provided with a small surfacecooler, o,through'which non-condensable gases and air may escape, but which is'intended to condense and return to the reservoir all condensable vapors. This condenser is provided with a. spiral -pipe, p, which is opened at its upper end atp. The spaces around and between the pipe should be packed with a freezing-minture of salt and ice, to make it perfectly e'll'ectual. After the wort and its condensed vapors have been collected in reservoir 11, its contents may be let down into working-tons 9 through pipes r, being governed by stop-cocks .9.

My process for brewing beer or other malt liquors with the apparatus herein described is as follows: When the wort has been prepared for boiling in a proper manner, steam is let into pipe Z1, and the operation begins. As the vapors of the boiling wort rise they pass into the passages c, which, being surrounded by cold water, condense them to aliqui d, This liquefied vaporruns intoipipe chand is conducted into the lower part of tank 6, fromwhence it came in the form of vapor. This liquid contains the aromatic and volatile oils of the malt and hops. If the cover of the tank be perfectlyair-tight, and the condenser properly supplied with-cold water, none of the fine aroma of the wort will escape; After the wort has been sufficiently boiled, 'itis let down into tank 9, where it is strained, and is then pumped up into the cooler. The cold water, whichisbrought to the cooler by pipe k, first passes through the lower folds/of this pipe, then through the next one above it, till it reaches the top fold, from whence it passes oif through to pipe is". The wort descends from top to bottom of the Y is cooler, dripping from fold to fold. As the water rises in the ooolerit becomes heated nearly to the temperature oi" the wort, but, as the wort descends, it falls upon less heated folds until it reaches the bottom, where the pipe is of the same temperature as the coldest water. The wort, after being cooled, passes from the cooler to reservoir n through pipe m, where it is stored preparatory tooonducting it to the working-mus.

At the beginning of the process both the boiling-tank'and reservoir contain air and non-condensnblc gases, which must have an opening for escape. Such an escape from tank 6 is provided at e, and from the reservoir atp', but in either case the 'u'ir cannot escape without first passing through a surface-condenser, which takes from it any condensable vapors with which-it may beioharged.

Thus, by this process, an the fine aroma of the maltnnd hops is retained in the wort, which is readily distinguishable in the liquor after it has'been fermented. I

Having described my process for brewing malt liquors, what I desire to claim, and to have secured to me by Letters Patent of the United States; is I '1. Condensing the vapo'rs of the boiling wort, and returning them to the boiling-tank as fast as condensed, and afterwards cooling the condensed vapors and the wort together by passing-themthrough an enclosed surfacecooler, as herein specified v 2. The Combination of an enclosed surfaee-coolei' with a boiling-tank, which is provided with a. condenser for condensing the vapors of the wort, end.with a, pipef'or conducting the condensed vapors baclcto the boilingtnnk as fast as condensed, as herein specified.

W ELLIOT.

Witnesses:

M, L. ELLIOT, LOWELL ELLIOT. 

